21940000

素因数分解:

$2^5\times 5^4\times {\mathrm{1097}}^1$

素因数の和:1127

約数の個数: 60

約数和(自身を含む): 54024894

約数和(自身を除く): 32084894

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 125, 160, 200, 250, 400, 500, 625, 800, 1000, 1097, 1250, 2000, 2194, 2500, 4000, 4388, 5000, 5485, 8776, 10000, 10970, 17552, 20000, 21940, 27425, 35104, 43880, 54850, 87760, 109700, 137125, 175520, 219400, 274250, 438800, 548500, 685625, 877600, 1097000, 1371250, 2194000, 2742500, 4388000, 5485000, 10970000, 21940000]

約数ペア:

[(1, 21940000), (2, 10970000), (4, 5485000), (5, 4388000), (8, 2742500), (10, 2194000), (16, 1371250), (20, 1097000), (25, 877600), (32, 685625), (40, 548500), (50, 438800), (80, 274250), (100, 219400), (125, 175520), (160, 137125), (200, 109700), (250, 87760), (400, 54850), (500, 43880), (625, 35104), (800, 27425), (1000, 21940), (1097, 20000), (1250, 17552), (2000, 10970), (2194, 10000), (2500, 8776), (4000, 5485), (4388, 5000)]